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mailX by mailwarm vs Smartlead.ai

Side-by-side comparison of features, pricing, and ratings

mailX by mailwarm

Free email deliverability toolkit and live DNS checker for humans and AI agents.

AI cold email platform with dedicated deliverability infrastructure for scaling outbound.

Pricing

Freemium

Freemium

Plans

$0/mo

Custom

$39/mo ($32.50/mo annual)

$94/mo ($78.30/mo annual)

$174/mo ($144.50/mo annual)

$379/mo ($314.60/mo annual)

Popularity

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Resources

Best AI guides
Stacks
Blog
Methodology
Viability scoring

Company

About
Team
Press & brand kit
Contact

Beginner-friendly

Intermediate

API Available

Platforms

WebAPI

WebMobileAPI

Categories

📈 Marketing & SEO⚙️ Developer Infrastructure

📈 Marketing & SEO

Features

DNS Lookup (A, MX, TXT, CNAME, PTR)

SPF Checker & Generator

DKIM Checker & Generator

DMARC Checker & Generator

BIMI Checker

Blacklist (RBL) Checker

SMTP Test & Finder

IMAP Checker & Finder

MX Lookup

PTR Lookup

DNS Propagation Checker

TXT Record Lookup

MCP (Model Context Protocol) integration for AI agents

REST API for automated diagnostics

Email deliverability guides and blog

AI-powered SmartAgents for full-cycle outreach automation

SmartProspect – earn 1 verified lead per 3 emails sent

SmartInfra – dedicated-tenant email deliverability infrastructure

SmartDialer – AI multichannel calling with local presence numbers

Ultra Premium Warmup – unlimited email warmups with human-like interactions

SmartDelivery – email placement data to boost inbox landing

Unified Master Inbox for reply management and deal flow

AI reply classification and prioritization by intent

Built-in email verification to reduce bounces

Automated DNS, SPF, DKIM, DMARC setup

Automated follow-up sequences

CRM with Kanban board and activity timeline

Mobile app for on-the-go management

API and webhooks for custom integrations

SmartSenders – pre-configured mailboxes via Google and Outlook

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